This book is an original, accessibly written, contribution to Roman and Hellenistic history. Its subject is a long (1474-line) ancient Greek poem, Lykophron’s Alexandra, probably written about 190 BC. The Trojan Kassandra foretells the conflicts between Europe and Asia from the Trojan Wars to the establishment of Roman ascendancy over the Greek world in the poet’s own time, including the founding of new cities by returning Greeks through the Mediterranean zone, and of Rome by the Trojan refugee Aineias, Kassandra’s kinsman. Simon Hornblower now follows his detailed commentary (OUP 2015, paperback 2017) with a monograph asserting the Alexandra’s importance as a historical document of interest to political, cultural, and religious historians and students of myths of identity. Part One explores Lykophron’s geopolitical world, especially south Italy (perhaps the poet’s area of origin), Sicily, and Rhodes, and argues that the recent (in the 190s) hostile presence of Hannibal in south Italy is a frequent if indirectly expressed concern of the poem. Part Two investigates the poem’s relation to Sibylline and other anti-Roman writings, and argues for its cultural and religious topicality. The Conclusion shows that the 190s BC were a turning-point in Roman history, and that Lykophron was aware of this.